Friction-clutch.



J. E. GILSON.

FRIGTION CLUTCH.

APPLIOATION FILED JUNE 10, 1912.

1,981,52, Patented Dec. 16, 1913.

2 SHEETS-SHEET 2.

WITNESSES.' A INVENTOR.'

COLUMBIA PLAINOGRAPH C0., WAsHlNu'roN. D. C.

NETE@ STAES PALENT OFFEQE.

JOHN E. GILSON, OF PORT WASHINGTON, WISCONSIN, ASSIGNOR T0 GILSONMANUFAC- TURING COMPANY, 0F PORT WASHINGTON, WISCONSIN, 'A CORPORATIONOF WISCONSIN.

FRIoTIoN-CLUTCH.

Specification of Letters Patent.

Patented Dec. 16, 1913.

Application led J'une 10, 1912. Serial No. 702,784.

To @ZZ whom t may concern Be it known that I, JOHN E. GILsoN, a citizenof the United States, residing at Port lVashington, in the county ofOzaukee and State of Wisconsin, have invented a Frietion-Clutch, ofwhich the following is a full and complete specification.

My invention is an improvementJ in friction-clutches, and relates moreespecially to that particular class in which a split ring or bandcarried by the driving-wheel is clamped for frictional engagement with adrum keyed to the operating-shaft, whereby to connect said wheel to theshaft for rotation therewith.

The primary object of my present invention is to provide a particularform of mechanism for applying the friction ring or band, such mechanismbeing strong and durable in construction and effective in use to insurea positive operation'of the clutch device; all as hereinafter fullydescribed in the specification and specifically set forth in theappended claims.

In the. accompanying drawings: Figure 1 is a side view of afriction-clutch, constructed in accordance with my invention. Fig. 2 isa longitudinal vertical sectional view through the clutch. Fig. 3 is arear end view of the clutch. Fig. 4 is a detail view of the split ringor band, the upper part being broken away to show the means employed forcontracting said ring or band.

Fig. 5 is a face view of the wheel whichcarries the split ring or band.

Like numerals of reference indicate like parts in allthe figures of thedrawings.

In carrying out my invention the drivingshaft, as 7, to which thefriction-clutch is applied, is preferably reduced in diameter at itsouter end, as shown in Fig. 2, and upon this shaft is mounted a longsleeve 8, which is securely fixed to said shaft in any suitable manner,for instance at its front and rear ends by a pin 9 and key 10,respectively. The rear end of the sleeve is enlarged to form afriction-drum 8, and at a suitable distance from the drum said sleeve isreduced in diameter to provide two stepped bearing portions 8b and 8,adapted to receive the operating parts hereinafter described.

Mounted upon the 'drum S, so as to frictionally engage therewith, is asplit I ing'or` 11b, by which it is connected to a wheel 12, looselymounted on the bearing portion 8b of the sleeve, said pairs of earsbeing at opposite sides of the ring or band, and the pair of ears 11alocated at one side of the transverse cutor split 11c in the ring toreceive a spindle or rocking-shaft 13 which coperates with asliding-bolt -14 for contracting the ring or band, said bolt extendingfrom a lug, 15, on the ring at the opposite side of the transverse cutor split therein. The spindle or rocking-shaft is carried by the wheel12, being mounted in a long bearing 12a at one side of the same, andpassing through the ears 111L of the split ring or band serves toconnect the lat-ter to said wheel. To hold the split ring or band on theend of the spindle or rocking-shaft the latter is provided with atransverse pin 16 at its outer end, and to more securely connect thering to the wheel a pin 17 is passed through the ears 11b at the otherside of the ring and through an opening 12b in the wheel, said wheelbeing preferably reinforced at this point by bosses which surround theopening at the opposite ends thereof, as shown in the drawings.

For the purpose of operating the slidingbolt the spindle orrocking-shaft 13 is provided with a longitudinal groove forming ashoulder 13a, with which engages a corresponding shoulder, 14a, on thebolt, the lastmentioned shoulder being formed by cutting away ornotching the bolt at one side, and in order ,to maintain thesliding-bolt in positive engagement with the spindle or rockingshaft apin 18 is passed transversely through the pair of ears 11a immediatelyabove said bolt. 'It will be seen by reference to Figs. 3 and 4 of thedrawings that when the spindle or rocking-shaft 18 is turned to theright the bolt will draw one end of the split-ring toward the other;thatis to say, will draw the end carrying the lug 15 and bolt toward theend which is support-ed on the wheel l2 by the spindle, and thisoperation will contract 'the ring or band upon the drum so as tofrictionally engage therewith. according to the power applied to thespindle or rocking-shaft. The spindle or shaft is rocked only a certaindistance by the operating means, Vhereinafter described, and in order toregulate the frictional engagementof the clutch-surfaces thesliding-bolt is adjusted by means of nuts 19 threaded. on outer endthereof against the lug 15, it being understood, of course, that thebolt rpasses loosely through said lug.

For the purpose of operating the spindle or rocking-shaft the forwardend thereof projects beyond the bearing 12a and has keyed thereon anoperating-arm 20, the outer end of which is disposed in the path of asliding-cone 21, mounted on the reduced bearing-portion 8c of the sleeve8, and for the purpose of manipulating this cone it is provided with ahand-wheel 22, secured thereon by a collar 23. At the upper end of thecone, just beyond the inclined surface thereof, is a peripheral groove21a, to receive the outer end of the arm, or frictionroller 24 thereon,and maintain the parts in this relative position. rIhe cone is looselymounted o'n the sleeve so that it will not turn therewith during theoperation of sliding it back and forth to operate the arm 20, inapplying and releasing the friction-clutch, and it will b-e noted thatthe movement of the sleeve in applying the clutch is limited by contactwith a shoulder, as 8d, formed by the enlarged bearing-portion 8b of thebearing-'sleeve 8. y

rlhe wheel 12, which carries the split ring or band is provided with lalong hub, by which it is mounted on the bearing-portion 8b of thebearing-sleeve, and said wheel is held in place by means of a collar 25.rIhe wheel 12 may constitute the driving-wheel fortransmitting therotary motion of the shaft, but in the present instance the rim of thiswheel is narrow, and is provided with yapertures 12C, suitably spacedand adapted to receive the means for fastening theretov'a ring, as 26,`(dotted lines in Figs. 1 and 2.) having peripheral teeth to form agear-wheel, or of sufficient width to form a pulley.

In Fig. 1 the parts are shown in their relative position when the clutch`is applied, the arm being swung outward with its free end engaging thegroove 21a' at the outer portion of the slidingcone, and the spindle 13turned to exert tension on the bolt to clamp the split-ring tightly uponthe friction-drum 8a, and when so arranged the wheel 12 and split-ringturn with the drum and shaft by reason of the frictional engagement ofthe split-ring with said drum. In releasing the clutch it is onlynecessary to grasp the hand-wheel 22 and move it outward until thesliding-cone carried thereby releases the arm v20, which latter willthen swing inward toward the sleeve and relieve the tension on the boltthus permitting the split ring or band to expand out of 'fric-f tionalvengagement with the drum. This will permit the sleeve 8 anddriving-shaft 7 to which it is connected to revolve freely within thesplit=ring, wheel 12, and slidingcone, and the gearwheel 26 will thenremain stationary.

Having thus described my invention, I claim:

1. In a friction-clutch, the combination with the driving-shaft, of adrum fixed thereon and having a bearing-sleeve at one side of the same,a split-ring on the drum to frictionally engage the same, vsaidsplit-ring having a pair of apertured ears o'n one end and a lug on theother end, apertured ears on the split-ring opposite the aforesaid earsand lug, a wheel mounted onthe bearingsleeve and having a long bearingon a line with the apertured ears at `one of the Vadjoining ends of thesplit-ring, a pin projecting from the wheel through the other aperturedears of the split-ring, a rocking-shaft in the aforesaid bearing 0n thewheel rotatable in the adjoining ears of the split-ring and having ashoulder between said ears, a bolt extending from the lug on thesplitring and having a shoulder with which the shoulder on therocking-shaft cooperates, and means for operating the rocking-shaft.

A2. In a friction-clutch, the combination with the driving-shaft, of adrum fixed thereon and having a bearing-sleeve at on'e side of thejsame,a split-ring on the drum to frictionally lengage therewith, saidsplitring having a pair of apertured ears on one end and Ya lugon theother end, apertu'red ears on the split-ring opposite the aforesaid earsand lug, thering being cut transversely on a line with the center oflthe`last'mentioned ears, a wheel mounted on the bearingsleeve and having along bearing on a line with the apertured ears at'the end of thesplit-ring, a pin connecting said wheel with the apertured earshereinbefore last mentioned, a rocking-shaft inthe aforesaid bearing onthe wheel rotatable in the adj oining ears at one end of and having ashoulder between 'said earson the split-ring, a bolt eX- tending fromthe lug of the split-ring and having a shoulder' with which the shoulderon the rocking-shaft coperates; together with an' arniprojecting fromthe other end of the rocking-shaft, and a sliding cone on the sleeveengaging the outer end of the arm, substantially as shown and described.

In testimony whereof I have signed my name to this specification in the'presence of two subscribing witnesses.

JOI-IN E. GILSON. Witnesses:

H. W. Boutis, A. J. BOERGER.

Copies of this patent may be obtained vfor five cents each, byaddressingl the Commissioner of Patents,

